Yamaha T9.9XPHB Outboard Motor. 25-Inch Shaft Tiller Handle Electric Start Power Tilt High Thrust Gray. The Yamaha T9.9XPHB High Thrust Outboard Motor is built to deliver powerful, precise control for larger boats, sailboats, and trolling applications that demand dependable auxiliary power. Designed with an extra-long 25-inch shaft and Yamaha's High Thrust lower unit, this model provides superior pushing force and low-speed maneuverability-even in challenging conditions like strong current or he